(19)
(11) EP 0 388 156 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.09.1992 Bulletin 1992/36

(43) Date of publication A2:
19.09.1990 Bulletin 1990/38

(21) Application number: 90302676.3

(22) Date of filing: 13.03.1990
(51) International Patent Classification (IPC)5: G06F 15/38
(84) Designated Contracting States:
DE FR GB

(30) Priority: 14.03.1989 JP 63253/89

(71) Applicant: CANON KABUSHIKI KAISHA
Tokyo (JP)

(72) Inventors:
  • Tokuume, Yoshihiro
    Machida-shi, Tokyo (JP)
  • Shibata, Shogo
    Tokyo (JP)
  • Masegi, Koichi
    Machida-Shi, Tokyo (JP)

(74) Representative: Beresford, Keith Denis Lewis et al
BERESFORD & Co. 2-5 Warwick Court High Holborn
London WC1R 5DJ
London WC1R 5DJ (GB)


(56) References cited: : 
   
       


    (54) Natural language processing system


    (57) A natural language sentence generating apparatus comprises a grammatical rule storing section (11) for storing grammatical rules each of which includes a phrase structure part, a semantic part which represents the manner of propagation of attribute information from a particular superordinate category to a subordinate category linked thereto, a condition part which represents an applying condition for the grammatical rule, and a message part which represents a message for imposing limitations on a phrase structure rule utilizing the subordinate category as a new superordinate category. The natural language sentence generating apparatus also comprises a search section (12) for searching the grammatical rule storing section, an interpreting section (13) for interpreting the grammatical rules stored in the grammatical rule storing section, and generating section (14) for generating a phrase structure from a set of information on a grammatical function imparted to a particular grammatical rule by interpreting and applying the particular grammatical rule which is extracted from the grammatical rule storing section by the search section.







    Search report